﻿#region License
// Distributed under the BSD License
// =================================
// 
// Copyright (c) 2010, Hadi Hariri
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//     * Neither the name of Hadi Hariri nor the
//       names of its contributors may be used to endorse or promote products
//       derived from this software without specific prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// =============================================================
// 
// 
// Parts of this Software use JsonFX Serialization Library which is distributed under the MIT License:
// 
// Distributed under the terms of an MIT-style license:
// 
// The MIT License
// 
// Copyright (c) 2006-2009 Stephen M. McKamey
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#endregion

using System;
using System.Collections.Generic;
using System.IO;
using System.Web;
using JsonFx.Model;
using JsonFx.Serialization;

namespace EasyHttp.Codecs.JsonFXExtensions
{
	using System.Globalization;

	public class UrlEncoderTextFormatter : ITextFormatter<ModelTokenType>
    {
        public void Format(IEnumerable<Token<ModelTokenType>> tokens, TextWriter writer)
        {
            var firstProperty = true;
            
            foreach(var token in tokens)
            {
                switch (token.TokenType)
                {
                    case ModelTokenType.None:
                        break;
                    case ModelTokenType.ObjectBegin:
                        break;
                    case ModelTokenType.ObjectEnd:
                        break;
                    case ModelTokenType.ArrayBegin:
                        break;
                    case ModelTokenType.ArrayEnd:
                        break;
                    case ModelTokenType.Property:
                        if (!firstProperty)
                        {
                            writer.Write("&");
                        }
                        firstProperty = false;
                        writer.Write(token.Name);
                        continue;
                    case ModelTokenType.Primitive:
                        if (token.Value != null)
                        {
                            var urlEncode = HttpUtility.UrlEncode(token.Value.ToString());
                            writer.Write("={0}", urlEncode);
                        } else
                        {
                            writer.Write("=");
                        }
                        break;
                    default:
                        throw new ArgumentOutOfRangeException();
                }
            }
        }

        public string Format(IEnumerable<Token<ModelTokenType>> tokens)
        {
            using (var writer = new StringWriter(CultureInfo.InvariantCulture))
            {
                Format(tokens, writer);

                return writer.GetStringBuilder().ToString();
            }
        }
    }
}